On Fri, 18 Nov 2005, David S. Miller wrote:
> From: Hugh Dickins <[email protected]>
> Date: Fri, 18 Nov 2005 08:02:02 +0000 (GMT)
>
> > That code is necessary to reproduce the existing behaviour, which has
> > always done COW on PageReserved mappings without complaint - if the
> > vm_page_prot didn't already let you slip through without a WP fault.
>
> And there is evidence today that this is really needed, at least
> by vbetool.
>
> Ok, we need COW on VM_UNPAGED. :)
Are you so sure of that, that we should even skip adding a warning?
Hugh
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